Ready to move up?

[Atropos]

Hey folks, after implementing some of Gigabets tricks I seem to do much better:

#Game No :
***** Hand History for Game *****
NL Hold'em $30 Buy-in + $3 Entry Fee Trny: Level:1 Blinds(10/15) - Saturday, May 21, 13:46:10 EDT 2005
Table Table **** (Real Money)
Seat 2 is the button
Total number of players : 9
Seat 1: mytho_1987 ( $755 )
Seat 2: wmood ( $1775 )
Seat 3: Bobson55 ( $740 )
Seat 5: Looselady111 ( $785 )
Seat 6: Bktuna ( $920 )
Seat 7: hunger_13 ( $375 )
Seat 8: HERO ( $770 )
Seat 9: Swan_Lee ( $760 )
Seat 10: rrojas ( $1120 )
Trny: Level:1
Blinds(10/15)
** Dealing down cards **
Dealt to HERO [ Th Td ]
Bktuna folds.
hunger_13 folds.
HERO calls [15].
Swan_Lee folds.
rrojas raises [50].
mytho_1987 folds.
wmood folds.
Bobson55 folds.
Looselady111 folds.
HERO calls [35].
** Dealing Flop ** [ Js, Qd, Qh ]
HERO checks.
rrojas bets [50].
HERO calls [50].
** Dealing Turn ** [ Ks ]
HERO bets [175].
rrojas calls [175].
** Dealing River ** [ 2c ]
HERO is all-In [495]
rrojas will be using his time bank for this hand.
HERO: AK ?
rrojas: yup
HERO: ok
rrojas folds.
HERO does not show cards.
HERO wins 1070 chips

No seriously are the 55s much harder than the 33s? It seems I could play much better if I just had more starting chips.
In the 33s I achieved an ROI of 0.55% over 132 tournaments.

Sure insufficient sample size but it is worth to stay at a level that can be beat without any problems for an eternity just to determine ones exact win rate?