I guess it would depend on what the "50% rake game with no luck involved" was, and your level of skill compared to your competitors. If it is one on one basketball, and you are LeBron James going up against 4th graders, then you take the scenario every day of the week.
In poker though, there is a little luck but a lot of skill as well. As tenbob said, over a large enough sample size, if you show skill then you will make a profit.
...Also, a 50% rake on the skill game is crazy high. That means that you need a 75% winning percentage in order to make a profit. For heads-up SnGs with a 5% rake, you only need a 52.5% winning percentage to make a profit. I guess it depends how good you are at the skill game, but i think the poker game
is the way to go in this scenario.
Edit: I also want to add, there is luck in everything (in my opinion). Watching the US Open, players get lucky there. Players have gotten lucky in the first 2 games of the NBA finals. I believe that you do create your own luck, but imagining a game with absolutely no luck is unrealistic (in my opinion)