[NohatCoder]

3) That depends on what games you count and how you define lopsided. I'd say a reasonable quantification of lopsidedness is [winning score]/[games played].

By that metric Carlsen-Nepomniachtchi is fairly lopsided at 68.2%, Capablanca-Lasker is only 64.3%.

The disputed era FIDE world championship final in 2000 had Anand beating Shirov with 3.5 of 4, a whooping 87.5%. But you might no count that as it was not a traditional long 1v1 match.

So if we discount that we have to go all the way back to 1910 Lasker-Janowski, 9.5 of 11, 86.4% to find a more lopsided match.

The only other 1v1 world championship matches that have been more lopsided are:

1896-1897 Lasker-Steinitz 12.5 of 17, 73.5%.

1907 Lasker-Marshall 11.5 of 15, 76,7%.