Could be but its hard to say, were they found in the same area.
I have 3 years of left sides off the same buck and when you look at his buttons they all have the same divet in the middle and a small ridge along the back, They got bigger around as he got older but they all had those same charateristics.
I'm think 2 bucks but both are of the same gene pool they have a lot in common, maybe even the same Buck and doe had both of them making they full blood brothers.
"I have found if you go the extra mile it's Never crowded".