I’ve never played it either, but I’ve looked into it every now and then. The main differences are as follows: Wargaming has one separate game for every major branch (one for tanks, one for air, one for ships) while WT is one game. This is an aspect I think Gaijin doesn’t take enough credit for, actually. While yes, they’ve punched above their weight and overreached in terms of how much stuff is in the game, and product QA is really suffering, the fact that we have all these different combat environments in one game, and a partial degree of combined arms, is technically remarkable.
WoT is a lot more arcadey than War Thunder, utilising a health points system. It also doesn’t have a lineup system, meaning that you play a single vehicle at a time. So it’s clearly appealing to a different niche.
Finally, its tank roster is not completely fictional, no: they do have a pretty wide selection of historical tanks. But they also allow blueprints, with mixed results. You know by this point that I’m fine with blueprints, but there are a few things in WoT that are honestly a little outlandish, like this.
As Wargaming’s own wiki says about this “Jagdpanzer E-100”,
No historical records exist of the Jagdpanzer E-100’s design specifications. In particular, the intended superstructure and weight of the vehicle is unknown. The model used in-game is what the design could have been if the project was carried to further development.
Most assessments of the project hold that centrally-mounted superstructure akin to that of the Jagdtiger is more likely to have been used, since the basic E-100 has a rear-mounted engine and thus a rear-mounted superstructure would require a complete revision of the hull.
The vehicle likely would’ve been named Sturmgeschutz E-100 rather than Jagdpanzer E-100.
One of the Jagdpanzer E-100’s intended historical armaments, the 15 cm StuK L/63 gun, is missing. The other historical armament, the 17 cm StuK L/53, might be the same as the “17 cm Pak” gun in-game.
To someone who’s familiar with German R&D processes from that era, this is quite head scratching to read. Already the E-100 we have in WT is something I frown upon because the turret choice is wrong (as far as I know no design for it was ever finalised, but if you’re speculatively selecting one, going with the Maus V1 turret is one of the few definitive mistakes you can make).
But this goes a step farther with an iteration they themselves think is dubious (and I have many questions about their nomenclature too).
Basically, I suppose the point is that WoT doesn’t just allow “alternate history”, which is a speculative exercise I appreciate, but also fiction, which I would rather leave out of a game like WT.
I’ve also heard, but I have no way to corroborate this, that there is a powercreep issue, with the fake vehicles being simply better than the real world stuff.
EDIT: there is one WoT mechanic that I find kind of interesting, assuming I understand it correctly: some vehicles have options when it comes to which weapon to mount, and when you research a gun, it stays with you as you progress. For example, you could have researched the Soviet 100mm gun, and then choose if you want your T-44 to mount the 85mm gun, or the 100mm gun.
While that doesn’t really apply to the way the WT tech tree is structured, something about the idea appeals to me, probably because the ability to “tinker with your vehicles in the hangar” feels pretty immersive on the face of it.