the 5470 vs the GT 335, the GT 335 is hands down far more powerful.
if the 5470 was a 5650 than it would be about even.
of the three you mentioned:
NVIDIA GeForce 310M + Intel GMA HD 1GB DDR3 VRAM
NVIDIA GeForce GT 335M 1GB DDR3 VRAM
ATI Mobility Radeon™ HD 5470 512MB dedicated video RAM3
Only one with a decent GPU is the GT 335.