If that is the argument that you're involved in, then this is how I'd tackle it:
"I think boxing is better because I enjoy it more."
IF you are dense enough to attempt that "MMA has no skillz" line of argument, then you're a candidate for the ****ing Darwin award.
There is considerable skill involved in both sports. One doesn't involve more or less skill.
Sure, to a boxing fan, MMA stand-up might seem rubbish and one-dimensional, but this is because those MMA fighters have to consider the following:
1) Leg kicks
2) Take-downs
3) Small, small gloves making it very hard to cover up
Please, please do not be dumb enough to argue that one is better than the other, because one boxer beat one UFC dude.