I hate minraises, which is what I think you mean when you say you raised 2 bb's, rather than you raised 2 bb's on top.
By raising 3-4bb with all raisable hands, you make opponents unsure of what hand you could have. If someone min raises and I'm in the bb, i'll almost certainly call with any hand purely because i'm getting the right odds
to call. Make that raise bigger, and get rid of all the weaker hands. If you raise it up more and the A3 still calls and hits his 3 outer on the river, thats poker. Calling all in with JJ on a QQQ board is most definetly a +ev move.