Not him or transmasc, but as a trans woman, gender doesn't influence how bad someone is, but it does influence how they are bad. Transphobia (directed at trans women) from cis men often looks like disgust and direct violence as well as oversexualization. There's also an element of seeing themselves as knights in shining armor to cis women. From cis women it's more likely to look like ostracization, backstabbing, and calling for men's protection.

If you noticed that that's how cis men and women tend to treat cis women they hate, congratulations, you've figured out why one common refrain from trans women is that transmisogyny is a form of misogyny.