Please note that I am not criticizing ckingriches posts or how he plays/his views on the hand. This is merely my views and opinion on raising vs shoving in this situation.
The one bad thing about raising and not shoving is you're losing a lot of value on your hand when you have your opponent beat PF.
For example lets say BB is going to call any raise/all in with any pair (shove with 1010+), J10s+, Q10s+, K9s+, QJ+, KJ+, any Ax hand, and mid suited connectors. (Im only doing one blind calling since it makes explanation a lot easier. Decisions will be much more difficult if both blinds call.)
So, it's a pretty wide range of hands. You're only beat by a bigger ace, over pairs, and you're racing against mid pairs. Lets also note that if you're opponent has rags, he's folding regardless if you raise or shove. We're not concerned about that. We're more concerned about when you're opponent has a hand to call with.
Lets say you bet 3x the BB and big blind calls. The flop is A 5 3 and BB is holding KJ. You c-bet and BB folds. Nice, you just won a small pot. But what if you had shoved pre-flop, BB calls with KJ, and you hit the ace. It's in his calling range, but now all the money is in the pot and he doesnt have the chance to fold. He has to hit runner runner to beat you. Not only do you double up here, but you cripple/knock out a player. This makes it much easier to win the SNG with a much bigger stack and 1 less opponents than it is to win the SNG with a slightly bigger stack but still 4 opponents.
Same thing, 3x raise, villain has KJ, and the flop is 2 7 5. What do you do here? Do you want to bet c-bet out and commit yourself with just overcards? Do you check and put yourself into a check/fold situation if BB bets out? This is a tough spot to be in because villain can be holding anything here. By shoving all-in, you avoid the tricky situations when flop misses you.
One of the main problems that I see with just raising when you're short stacked is that it doesn't really improve your chances of winning by much very often.
a) You raise, blinds fold, you pick up pot. Same thing happens if you shove.
b) You raise, BB calls, you c-bet, BB folds, and you've slightly increased your stack.
c) You raise, BB calls, the flop misses you, and you check/fold. You're stack has decreased significantly.
d) You raise, BB shoves, and you fold. Your stack has decreased significantly. If you're thinking about calling a shove, you might as well have been the first in the pot. I don't really see a lot of people raising with A9 hoping their opponents will come over the top so they can call...
e) Best case scenario: You raise, BB calls, you both hit the flop, get it all in, and you win.
So, in these (basic) possible out comes, you're either going to increase your stack slightly...which is better than before, more BBs/higher M, but you're still pretty short-stacked. Once blinds go up again, you're back in a similar situation. Or you're going to lose a significant amount of your stack when you have to fold and if blinds raise, you're in a much more difficult situation. Now your shove range is wider and its easier for bigger stacks to call you. So, in most cases, you're only giving yourself a slight edge to win or putting yourself in a much worse predicament. In HU, majority of the time either you, your opponent, or both of you are going to miss the flop. So, it's a game of playing the player or who is brave enough to take a stab at it first.
Raising and winning a small pot = 1825 stack (75/150) vs 4 opponents.
Raising and losing a small pot = 1050 stack (75/150) vs 4 opponents
So, what is the difference between shoving and stealing blinds vs raising and stealing blinds? Not much (you win the same amount if they fold.) However, when you shove and you're called by weaker hands, you're putting yourself into a better situation to win. By shoving and getting called, you're eliminated your opponents chance to fold if they miss the flop, you eliminated the chance of them bluffing you out of the pot if you miss the flop and you check. And if you win, you've increased your stack significantly and you've knocked out a player.
Shoving and winning a big pot = 2800 stack (75/150) vs 3 opponents.
Of course, the one draw back to shoving and getting called is that if you are called and you lose, you're out of the MTT. However, I think that's ok if your goal is to win the MTT. It's a much greater risk for a much greater reward. Again, it's a lot easier to win with an average-above average stack and 3 opponents than it is to win with a below average/super short stack and 4 opponents. If you're playing the safe raise/fold route, than you're either bettering your chance of lasting a bit longer and maybe making it into the money (or getting lucky) or you're going to find yourself as a super short-stack trying to hold on as long as you can. I guess if you're goal is just to sneak into the money, then this is your better option...