I tried using 3DMax once.... i hated it!!!
The UI is built from a programmers perspective, and not an artists. IF you ask me. The way the UI is laid out, and how everything operates.
Though allot of artist swear by it!!! And they say Maya makes no sense. So i guess it's all based on Personal preference.
As for less features.... I doubt it! They both have all the same tools, and maybe labeled differently, and maybe they even operate differently, and I'm sure some tool are more refined in one from the other.
But at the end of the day.... they both produce the same results, and get the Job done.
It's really based on the individual.
"Your weapons are no match for ours! People of Mars, surrender!"
"Um, this isn't Mars. This is Earth."
"Earth? Earth-with-nuclear-weapons Earth?"
[long pause] "Friend!!"