My Table wants to move away from D&D to another system.”Scifi and Tech” how do these 2 “armor series” compare?

1 to 5 Stars- Accessibility: There are readily available materials to learn from on the Internet for players; ie videos, pdfs and the like.
1 to 5 Stars- Material: Does the setting have well established lore that aids with my use and the players’ use of it? Is it dense or are there a lot of “fill in the blanks.”
Yes or No: Pregen modules and characters for ease of entry.

Lancer
&
Battletech.