I also dislike the GTX 1660/1660 Ti's name, but maybe that would work better as a mobile offering than the RTX cards?

TL;DW

The RTX 2060 is clocked slower than the Desktop model. So given RTX2060 and GTX1070 laptop prices are similar ($1800 with an i7), its actually better to buy a 1070 equipped laptop. 

ive never cared for laptops boasting any form of performance extreme in specs chart for some reason, i expect people buying a high end range use it as a weird status symbol & nothing more,  for me anything portable is for very simple bare minimum functions, like presentation,720p video playback & webcam chat , if it can do all that, cool then. it's a laptop .

gaming imo should be strictly be done on a desktop setting , wide screen, kb & mouse , faster refresh all that good stuff.

If I buy something expensive, I want full expansion (everything must be replaceable). Otherwise, it's useless in under 4 years...