From my observation (hope I don't offend any cismen), the average transguy I see is more attractive than the average cismale I see. There are examples of both who transcend the normal expected boundaries of beauty but, on average, I would say there is a better chance of randomly selecting a hot transguy than a hot cismale.
I think the reason is that the average cismale is just that: average. He normally doesn't feel the need to affirm anything and therefore will often be out of shape or unkempt. The average transman, on the other hand, is hyper aware of their expected place in society (as are us transgirls) and it creates a need to really take care of themselves. I rarely see an unkempt transman and it seems like a disproportional number of them are often buffed.
Again, I'm not saying transmen are "superior" to cismales, I'm just saying the hyper awareness of expectations (and new found extension on a passion to live) likely creates a stronger desire to try harder and take better care of their bodies. Again, this is just from my observations.
Just an afterthought, I'm starting to realize that all transpeople (men and women) seem to bring to the table a certain exotic and primal look about them that I believe will someday be valued as a positive thing. Once the stigmas and taboos surrounding our conditions and physical status are no longer a "norm", I think it will be okay for the average person to acknowledge that without being scoffed at.