Whats the difference between mens and senior golf clubs?

Answer 1

There shouldn't be much. Older players often have a slower swing speed, so they should benefit from softer shafts, usually "A" instead of "R". (Although there's no strict definition of what "A" and "R" mean.) Senior players also often prefer graphite shafts because they provide more shock damping than steel, so worn hands don't hurt so much from mis-hits.