Do you know why TS1000 is the first light for beginners?

My first serious grow light was a TS 600 and I managed to pull 155g under it. ak420 autoflower. I would have loved the ts 1000 at that stage.

I have a 142x60cm tent here I would love to throw a TSL 2000 in. I have a 300w greenfingers board here, but with a 65x20cm footprint it just doesn't cover a 2x4 well.