I think a few things need to be put in context here.
Certainly within the UK MPL programmes the following are true:
The only difference between a ATPL(F) and MPL is the single pilot hire/reward restriction. They can however still fly PPL so long as they have their SEP slip stamped because they complete all requiste training to fly to that level.
A typical MPL student will arrive to the airline with c. 110 flight hours as opposed to c.150 for the ab initio ATPL(F). The difference comes in the amount of time, at the latter stages, spent in a suitable simulator.
At 1500 hours it all becomes a moot point anyway because they upgrade to an ATPL in the same way an ATPL(F) would.
Having trained MPL and ATPL(F) students alike on the line, there is very little difference. Both sets of students have the same relative problems at the same relative points.
If you want to be a single crew pilot, do a ATPL(F) course. If you want to be a multi-crew pilot, do a MPL course.
Incidentally, under the UK CAA, in order to have a valid MPL course, you must have an airline partner because the MPL is not complete until the base training has been successfully done (amongst other reasons).