Mohammed certainly accomplished more in his lifetime than Jesus did, but that's about as far as matters go. It really shows the clash of realism vs idealism, since Mohammed and Jesus had more or less the same idea: preach the supremacy of the Abrahammic God above all other factors. Jesus approached the matter from an idealistic perspective and has the far better reputation, but was crucified by the very people he was trying to convert and saw his fledgeling followers forced underground for a time before their message tapped into the religious desires of the Greco-Roman world. Mohammed unified a disparate people and built an Empire with his religious teachings, with many big similarities in their messages: Submit/humble yourself to the Lord, forego religious legalism (which one can see in Islam through the forbidding of any imagery), and care for the poor (almsgiving as one of the Four Pillars)
It then depends on your moral perspective as to who did more good. Assuming that both religions are equally valid, Mohammed did the greater good in his lifetime, because he actually established his faith and had more impact on more people. If we look for a more motive-based morality (such as the thoughts of Immanuel Kant), Jesus is clearly superior. Taking into effect the good and the evils that have been done in the name of both, however, its easier today to point to Jesus, but from my perspective this is due to the comparative wealth of the Christian world vs the Muslim world, and not due to inherent goodness in Christianity or evilness in Islam
One must remember also that Mohammed was deliberately trying to convert people. Jesus was simply trying to reform the system in which he existed; a cleansing of Judaism vs a revolution within pagan Arabia. Their spiritual goals were similar, but the contexts were quite different.
Monster Hunter: pissing me off since 2010.
