Werner has scored more goals than Martial in his career, whether it be in the 'shit' BL or national teams. So if Werner is limited as a striker than I fear what Martial is.
True, you should've seen his missed versus Lyon last season in the UCL
Yes, he was unplayable for some parts of his career. But that's the point, it's only parts. Balotelli was unplayable in some parts of his career, so to Quaresma and Hatem Ben Arfa. The point is that they weren't able to do it consistently and therefore fizzled out.
I said earlier than Martial has more potential, he has potential to be one of the best forwards in the world. Currently he is no where near that and certainly not as good as Werner.