sly has an obvious scar along his hairline there is a good pic online that shows it. His facelift has pulled his eyes up and arched his eyebrows. Look at closeups of sly he has a complexion like putty.
Arnold has good complexion and no scars of any sort to indicate any kind of facelift, the skin above his eyes actually sags now which gives them a slit like appearance sometimes.
There's an article somewhere online about how 9/10 doctors reckon arnold has had nothing done surgically.
Some films he has worn different hairpieces or wigs to change his look. In the last 5 years his hair has clearly receeeded and thinned. In escape plan he has something on to thicken it out, I like both guys but sly seems to keep up the wigs or hairpeices in everyday life, just like the lifts. Easily the insecure one of the two.