Most experts expect him to win the appeal because of the partisan politics that is clearly involved with the Judge.. and the liberal prosecutor… Trump never had a fair chance for his defense.
Unless by "experts" you mean the commenters on the Conservative blogs you follow, I doubt that. Most opinions I've read confirm that appeals are difficult and citing the political views of the DA aren't sufficient. Tish James brought a carefully documented case and witnesses to court. Trump had no defense. It was such an obvious case that the judge granted a default judgement. Even the notion that there were no victims isn't enough. First the law doesn't require the prosecution to find a victim, and second, the state's witness testified that banks lost out on hundreds of $million in interest Trump would've otherwise paid. And besides, it's fraud. Saying you can't charge because nobody was hurt is like saying people can drive drunk as long as they don't get into an accident. Trump will lose his appeal.
Anyway, I only searched the web for a while to see if I could find any "experts" who agreed with you, and had no luck. Got a link?