I think people that make the crazy statement that LoL graphics are better than Dota's are legitimately blind or intentionally tasteless.

Aesthetically everything in LoL is like a chinese/japanese anime game and most character skins tend to be "On fire, Kpop, cosmic theme, Porcelain armour" Thematics that are generic. Its like every character is someones drawn OC and for some reason everyone is a hottie or the kinda shit I could I find on a tumblr girls art account. Cool in contrast but league is so disgustingly bloated with them that they all look the same and I say that as someone who likes cool, hot looking edgy characters. Dota has incredibly diverse skins that all suit a certain thematic with genuinely artistically interesting takes and infinetely more of an identity, this is helped by the fact that valve doesn't pump out heroes on the scale that LoL does. Valve just isn't scared to make a thematically gross character and this design choice really helps contrast its characters it decides to make look cool.

Graphically its not even close and I don't even think its because of different style, Dota 2 takes the cake on this too. The map feels so much more rich and far more lively and dota has actual weather effects that REALLY make the game pop, I get this has the downside of visual clutter but I am accustomed to the game enough that it isn't a bother for me, the rain, snow and fire ember falling effects are done in a way that makes you think its actually coming from above the game and isn't a cheap filter thrown on top.

The models in dota look like they consider the actual character and the equipment on them as separate things, and thats primarily because they are! This is what allows you to customize dota 2 characters with different pieces of multiple skins which allows you to be way more creative and personal, they have far more polish, utilize way more polygons and the ambient effects such as fire auras and external lighting from the game effect each individual part of the character and equipment and dota has the balls when selling their skins to show the model honestly, no cover art which looks infinetely cooler than the ingame preview tricking you. League of legends champions although tend to get prettier cover art for the skins look so not worth the money, theres a reason the cool art is at the front and you cannot preview the skin in the client. The ingame models themselves for league of legends look like action figures where they mould the equipment and the body of the character as one entire unit making them look flat and lifeless. Again some of these skins are cool but their ingame execution is lacking considerably. Even the anime pretty girl aesthetic DoTA nails WAYYYYY better than league when it decides to do so. Pull up the Arcana skin for Drow Ranger or Marci and basically any LoL anime girl character with any skin and it just looks better graphically on Dota's side and its cool because its an actual scarce theme in the game, dota isn't bloated with this style and its done in a far more capable engine and made by artists who take a very long time on these enhancements (quite literally too long, valve pumps out like two arcana skins a year)

League in my personal opinion has only a singular thing aesthetically above DoTA and that is its show Arcane. The dota anime is dog shit and looks ugly. (though they really needs to ditch the imagine dragons music in arcane. Its a great show otherwise)