Not even comparable, bro.
Line 6 has - to date - had to code to cheap SHARC chips with not a lot of memory. They have to recreate amps, cabs, pedals, and FX....ltos in each category. Then, they've had to design, manufacture, support, and refine hardware with footswitches, a display, USB port/drivers, and an expression pedal.
1-2 man VST shops, on the other hand, just have to code. They have no one to account to other than themselves, so they can take as long as they like. They don't have to worry about the DSP running their code. They don't have to worry about any hardware. And none of them have released anywhere near the amount of amount of amp or stomp models, plus most of the guys in that list don't model FX at all.
I love all of the developers you listed, and I personally use TSE X50 V2 and Recabinet 4 FAAAAAAAR more than any Line 6 product I've ever had. That being said, there's no comparison.