So why don't Magneto and Prof. X age?

Patrick Stewart was 47 when Star Trek the Next Generation first aired. Roughly Professor X should be around 50 in Dark Phoenix if you made him 21-25 in 1962 (first Class). So lets look at the evidence. 



VS




Got to say Mcavoy looks about the same as Stewart. Of course Stewart looked 45 when he 25. He also looked 45 when he was 65. Now Magneto should be 10 years older than Xavier because how old he looked during WW2. I originally thought Mcavoy was to young looking I was wrong. I agree with you on the white hair at least for Fastbender.