Comparing the in-game Fendt and the baler to iwan073 in his photos it looks about right.
To be fair, FS has always done a pretty poor job at representing the size and power of everything in game. It feels smallish and toy like and the rather weak audio of FS19 doesn't help. Probably as a lot of the time we play the game from miles above and behind the vehicles.
In real life square balers are huge hulking beasts. The tractors pulling them are usually wrenched back by the power needed to compress every portion of bales (square bales are made of a series of slabs if you like), so every few yards you see a tractor briefly slowing as if the brakes have been applied and revs dulled by the sudden extra work. FS doesn't replicate that at all, so when you see them in real life it's quite an eye opener.