It might sound silly as a question, but in the guide it says that if the hawlucha speed is 62 or more you should ignore the X speed and at 50 or less you have to reset hawlucha. Why is hawlucha speed so important and to exceed which pokemon should we have this speed?

Not a silly question, you would use the X-Speed on the Tower Calem fight to outspeed the meowstic. Using X-items also raises friendship (which helps for the lucky egg). I know I picked it up everytime, iirc wartab does too.

You do not have to reset if your speed is below 50 either, you would just simply need to use Lucario on Pre Ramos rival battle, as well as use Lucario on Ramos. (This just hurts the friendship with hawlucha, thus making getting lucky egg harder). Going for WR we would reset that speed bc doing the Lucario strat isn't the fastest.

Thanks you

Also feel free to join the 3DS Speedrunning discord to ask any questions you would like: https://discord.gg/UvQG6JX3