Ali would always present a problem for foreman stylistically.Foreman of 91 would have posed a considerable more threat since he didn't waste punches and wouldn't get remotley hurt with ali's power,but theres a reason foreman ducked holmes for over a decade and refused to fight tucker..both were movers and technical fighters with reach...Ali by decision .
You gotta be kidding. Though Foreman was more wise & efficent later, he his physical skills had declined so he was clearly was not as good. Sure he would not gas & get knocked out. but if a past '60's prime & still great '74 Ali could survive a Foreman who was much better at cutting off that small ring, against peak Ali I cannot see him doing as well as against peak Holyfield. Ali UD.