to be honest I was never a huge fan of the movies in trek, especially the recent alternate universe shit, and thought Alley was far better looking but as you say curtis probably better suited for the part
It's just a matter of opinion. I'll grant you that Alley was prettier, but Curtis was a better actress. Besides, Alley was about ready to join Cheers when Curtis was given the role.
Your opinion isn't wrong, nor is mine. We just have different tastes.