As is common with the Beast Era, the original toy's proportions are not as good as you remember. The changes are subtle, but they add up.
Yeah, my first reaction was "the new toy looks a bit better but not by much" then I went back and looked at some photos of the original and you're right - it's close, but there are a lot of little bits that add up.
That said, I'm still on the fence as whether the new one is (personally) worth getting. I tend to agree with Steevy that I wish they had experimented with changing some things up in the design a bit to try and improve it, but I understand that's always a risky move and may piss people off (just look at the reaction to Legacy RID Scourge). Might need to dig my original out of storage.