I mean there is objectively evidence Trump might be a pedophile. It's not strong evidence but it's evidence. I'm not aware of any for Biden.
Trump was accused of raping a 13 year old. The lawsuit was filed in 2016. Unfortunately the victim never came forward publicly and the case was dropped. Whether that's because it was meritless or due to threats and intimidation isn't clear. However, it's interesting to note that this accusation included Epstein, and this was before his wrongdoing was really public knowledge, which makes it more credible in my eyes.
It also matches Trump's other behavior and known sexual crimes quite well. My conclusion is, more likely than not, that Trump raped a child.
Biden, who knows? He was a powerful man but I haven't heard any accusations against him.