Please mind your language, there wont be a second warning.

And to answer to your concern, yes, it is very possible to lose and be slower than opponent despite having more power. I for starters have been losing in arena to teams even 20-30k less power than me at my very begining until I adopted speed meta. There s really no need to be unsporstmanlike and make bold assumptions like that.

Lastly, all calculations are done on server side, then once confirmed, you get the feedback on your client back. So no matter what you do on your client if the data isnt consistent with the server, it doesnt matter. In another words, its pretty hard to "hack" online games.