How difficult is it to become a good limit player?

[StarRain]

[ QUOTE ]
a couple people in this thread are saying beating midlimits quickly is unrealistic. but we should be clear which games we're talking about. the 40 at commerce and the 6-max 30 on stars are not exactly the same league.

[/ QUOTE ]

I guess that means the 40/80 game at Commerce is easy to beat? I have only played FL FR (Up to $50/$100 on PokerStars). Is the game at Commerce full ring one? Do you think I should give it a try if I was a constant winner @ 30/60 level while I was playing Fixed Limit?