I can’t really compare the two, having never played the second. That said, for the former just be a bit wary of advantage, in part because charging becomes always the default opener, and if advantage builds you can get some combat scenes that don’t make sense relative to prior character capabilities, at least from our experience. Also, spellcasting is kinda meh, given the many ways to screw it up and its questionable validity as a combat option by comparison to advantage stacking tactics. I guess if you let spells get past dodge without a roll ala magic missile (I wouldn’t), then dart becomes a spammable automatic advantage breaker, which can also be a problem the opposite way. Also, all the safe and easy spells like dart are forbidden because they aren’t color magic, lol, which makes very little sense. Even if you allow casting them with channeling to be legal in setting, not a given, that’s still a nerf and makes them less safe, ironically enough.
Still I do like Warhammer Fantasy’s setting, how many adventures they have, and the fact that there are so many careers you might start out as, and some feel like they’re just there because it makes sense someone would do that not because adventurers would want the skills, even if I feel the xp rewards for keeping what you roll could use a boost. I do also like occupation influencing status, and being the main class stand-in, with race also feeling properly differentiated. Of course, d100 rolls are pretty hit and miss, quite literally. And while advantage helps with maintaining momentum a bit it also makes each miss feel much heavier. Anyway, fun game, just some stuff to consider.