I was curious (but also lazy) so I went and checked Wikipedia. According to that source, the newest model of Ford F-150 is the fourteenth generation one, so let's look at the numbers for the top-of-the-line Raptor (or what I assume is the top, I'm not a pickup person). Assuming largest manufactured dimensions in all cases for the truck and smallest for the tank:

Ford F-150 Raptor length 232.6" width 118" height 80.7" curb weight 5,540 lbs.

Sherman Tank length 247" width 103" height 108" mass ("curb weight") 66,800 lbs.

So in terms of size, sure, they're kind of comparable, although in a head-on collision I think I'll still take my chances with the F-150.