AM68: Video Encoder/Decoder performance(vs AM62x)

Part Number: AM68
Other Parts Discussed in Thread: AM62P,

Tool/software:

Hi,Experts

In the related thread below, it is stated that the VPU of the AM62P is the same as that of the AM68, but isn't it possible that performance other than the VPU is the bottleneck, resulting in different "MP/s" performance values?

 RE: AM68: AM68x:Video Encoder/Decoder performance 

Best Regards,
Hidekazu