Answer is blatantly obvious...

Marco Huck was 210lbs when he fought Povetkin, he was a HW.

Bob Foster was 180lbs when he fought Ali. He was smaller than even the LHW's today after they rehydrate.

There is no comparison between Bob Foster and MArco Huck.

The correct comparison is between Bob Foster and say Sergei Kovalev or even GGG. It then becomes obvious that these guys would provide better competition to Ali or Povetkin than would Bob Foster.

Foster is a proof of how bad Muhammad's opponents were, which you somehow try to flip around and use as a proof of how limited Povetkin is by comparing to Huck? Do your math, it doesn't cut the mustard!