Hottest is the best upvotes to upload time ratio
Highest rated is most upvotes
example Plane A has 5 upvotes in 1 h but Plane B has 10 upvotes in 10 h. Plane A has a better upvote-time ratio than Plane B (upvote/12min to upvote/60min) so it is "hotter". But within a day Plane B has more upvotes so it appears higher in Highest Rated
@AstleyIndustries oh ok thankies
Hottest is the best upvotes to upload time ratio
Highest rated is most upvotes
example Plane A has 5 upvotes in 1 h but Plane B has 10 upvotes in 10 h. Plane A has a better upvote-time ratio than Plane B (upvote/12min to upvote/60min) so it is "hotter". But within a day Plane B has more upvotes so it appears higher in Highest Rated