In spite of having 4 APU cores the A8-3500M lags behind the i5-2410 quite a bit in overall CPU power.
On the Big List of CPU mobile benchmarks
the i5-2410 ranks #35 and the A8-3500M is #123.
For GPUs it's a closer match in performance but with the GT 540M having a convincing lead over the HD 6620G
GT 540M ranked #98 and HD 6620G #125.
Keep in mind that with games which are a bit more CPU dependent (RPGs and Sims) like StarCraft II that gap might be a bit wider.