I'm very doubtful that MO tyres are any different at all.
Besides that, mine came with MO Conti's which were good tyres. I replaced the rears with MO Bridgestones which are not very good in the wet, I would not buy them again & have recently bought Goodyear F1 GDS3's which have been the best yet, but are not MO tyres. Go figure.
Remember also, car manufacturers have always worked with tyre manufacturers to choose the best tyre for that model, it is only recently that they have started to put MO on the sidewall.
I doubt any of the major manufacturers sell any tyre which will adversly affect ESP etc, I suspect the tyre manufacturers & MB are behind MO tyres and MB get them discounted as the tyre manufacturer expects make money on the replacements. If they had any benefits for the MB owner, they would not be slow in claiming they last longer, grip better etc etc. I remain unconvinced that MO offers any benefit at all.
Russ