He's got the look and guys like Undertaker and Cane didn't really have charisma, they just played the "scary" guy, same as Martyn in the Undisputed film.
Fair comment, however they came from a time when wrestling was totally different in terms of kayfabe, the big scary undead gig was easier to pull off back then. Look at how many other 'big scary' guys wwe has gone through since that made little to no impact. These guys didnt speak for a long time and the gimmic worked, Ford doesn't have the presence or raw talent to work the ring and not be on the mic.
The only one whom it has worked with in recent years is that Brawn fella, and it took a group of guys to get him over.