Arby’s “roast beef” is nothing like roast beef - it’s cured or something - it resembles baloney or ham more than it resembles roast beef.
Having said that, I did go through a phase of enjoying their sandwiches back in the 1970s - the meat was thin-sliced and tender, the rolls were nice. They had some kind of horseradish sauce that I liked..
It just wasn’t anything like real roast beef.
I guess that’s ok.. whatever goes into a Philly cheesesteak sandwich bears no resemblance to steak or cheese either. :-)
A friend who worked at arby’s back in the mid 80’s told me once that the roast beef was actually marinated ham.
don’t know the truth to that but nowadays would really get the muzzies enraged..