OK, so here's a comparison of the latest AZL roller bearing truck (left) with the new Full Throttle rb (right). Curious that the AZL is supposed to be a 100-ton truck, yet the Full Throttle 70-ton is far beefier in its proportions, ironically approaching the bulk of 100-ton sideframes. The AZL is also seriously lacking detail, with rubber ball springs and non-existent bearing ends. FT might not be anywhere as crisp as Micro-Trains, but they at least have some kind of bearing ends visible, and of the right size. Oh, and evidently there is a 70-ton rb variety with three visible springs, although I have not come across a 1:1 photo yet.
Just to round out the comparison, here's Micro-Trains first- and second-generation 100-ton roller bearing trucks. Although M-T wins hands-down for clean, crisp tooling (second gen, obviously), the proportions are all off. Aside from the wheelbase being way too short, look at the bearing ends: at first glance you think, wow, they look really good, until you realize that they're maybe almost double the size of real ones (their melted-ice cream first-gen version had the size about right, at least). So the whole truck sort of winds up as something approaching a cartoon. You can also see that over the years they made the flanges deeper, and flared the top and bottom edges of the coupler knuckle.
Edit: For reference, here's a 70-ton ASF Ride Control and a 100-ton ASF Barber S-2 roller bearing:
