Please, don’t compare rank 3 and rank 6 classes.
If you compare linker3 vs falconer2, linker3 is obviously way better.
And yes, falconer is pure support class, it’s only power is Circling - there is 0 reason to get it besides circling.
While Linker also has Spiritual Link which is another OP skill if used right.
I agree that Linker nerf was a bit too much, it should be 2 seconds +0.2 per level instead. Right now linker 1 is really bad (I have one, and it was very hard to level). However linker2 and 3 is still very good.