The difference is quite marked based on the images. The finish ( chamfering) on LM Perpetual seems more industrial than the artisanal finish of LM101. The gear teeth also seem better finished similarly on LM101.
I am cautious to express an opinion here, as both look very good, but to put it in the late George Daniels’ words, there is less trace of the LM101 movement having being “made”, in fact hardly any trace at all, and the end result is that it looks more as if it has been “created”. Some of us would wish for something like this to be said about our work.
The anglage is definitely deeper in the perpetual, and I think both movements look great. However, to my also novice eyes the polishing in the grooves of the wheels on the LM101 looks perfect, and although the anglage is definitely less wide, the overall look on the simpler movement is, in my very humble opinion, more accomplished.