It's almost like you didn't realize the champion overview literally right next to the abilities outline bar, it shows the damage as magic or physical,
What style of combat they're likely to scale off of.
The champions damage output potential,
The tankiness of selected champion,
The potential zoning of the champion,
The potential roam / juke possibility of said champion,
The utility that the champion can provide in team fights,
And finally Last but not least, the skill ceiling or learning curve of the champion in question.
Riot will never implement something easier than this cause you're supposed to play the game and figure stuff out yourself, it's part of the climb or knowledge of the game.
If you want this to see every little stat so you can "counter pick the enemy" or "counter-build" the enemy, go to riots website champions or look at item effects..
Easy Down vote, complete waste of Dev time.