Trump's comment is 100 percent in line with his dictator/authoritarian comments and actually pair with his access Hollywood comment which also implies he can do things even if a woman disagrees.
The Biden comment was a poorly worded sentence that would have been completely ok IF IT WAS WRITTEN as there would be no ambiguity of possessive vs plural. However, Biden is NOT on the ballot and the reason he is NOT is because he was seen to be slipping. Biden has always been subject to gaffes, possibly because he has to work harder to say things to avoid stutters. In addition, all but the extreme MAGA see him as a good, genial man even if they disagree with his politics.
So, one controversy involves the Presidential nominee and fits CW about him. The second involves someone not on the ticket and the worst interpretation is absolutely NOT the CW, while the explanation, that he has gaffes and sometimes has some difficulty speaking fluidly is EXACTLY what concerned some people.
Though FOX may hope otherwise, I suspect the first, but not the second will resonate. I also thing it takes some chutzpah and lack of caution for Trump to emphasize anything to do with GARBAGE. after all, his comments on America as a garbage can are not ambiguous at all ... and fits who he is.