I understand other faiths go on about seeing their gods etc but you can't lump them all together, it's not an academic thing to do is it?
I agree. A muslim who claims he has seen Allah would be killed pretty quickly by his wonderful co-believers. As you correctly said, it is stupid to lump all religions together.
If there is one thing that you can say about all of them is that they are irrational belief systems. But the contents are as different as you can get, from the ultra-pacifist Jain religion to the Jihad-obsessed islam and from polytheistic Hinduism to Buddhism, which does not even have one god.