Okay let me explain it a bit better for everyone who feels a bit confused about why Luka is getting more attention (and so does Lebron) compared to Giannis who had a 50 point game.
First of all Giannis was last years MVP, dude is already good, we all know he is good, hell he is not only athletically freak but also quite talented as well and having Brook Lopez at center allows him to grab more rebounds, but he was already MVP last year, do you really expect him to be a 18 ppg dude? Of course not, he has 31 ppg and 11pg which is around 4 ppg better and 1 rpg better on his 7th season in NBA.
Looking at Doncic dude is in his second year only and he is already at 30.6 ppg and 10.1 rebounds, now that is statistically only slightly worse than Giannis who has already won MVP on a team that is miles worse than bucks on the west conference, so of course Doncic at his second season looks to be better.
Lebron however is just the opposite, just like how it is marvelous that Doncic is as good as Giannis on his second season is the big difference, Lebron is averaging only 25 ppg but has 11 assists per game on his 17TH!! season, which is why everyone is saying Lebron and Doncic could be MVP this year, not because statistically they are different from others that much, of course there are people with slightly better stats but nobody is on their second or seventeenth season while doing it, they are on their peak.
To make it short, MVP award doesn't only focus on the stat sheet, but with everything in general. Hype, media, influence in the game, even the fact that Luka is just 20 and LeBron being on his 17th season, leaderships, stats, and the list goes on.
We don't expect someone to win th MVP just because he scores or he passed an assist better than the others.