1. Merchandising. The 'commercials,' aren't even created by the creators of the game. Do we see Nojima or Nomura making up lines for the commercial? No, because that's not their job. That's why we have advertising agencies - they're in charge of promoting the game.
2.
A LOVE THAT COULD NEVER BE.
3.
A hatred that always was, in regards to Cloud and Sephiroth. If the creators actually did create the commercial themselves, you'd think they'd be smart enough to know that Cloud didn't
always hate Sephiroth. He admired Sephiroth at a young age.
In regards to the Itadaki Street Special, what's so special about that? They're shown together, big deal. That doesn't make them a canon couple.
And how the fuck is a Potion-Drink commercial with Cloud's drink and Aerith's drink together make it canon?
LOOKIE. CLOUD AND TIFA ARE NEXT TO EACH OTHER. TTLY CANONZ.
And Cloud and Tifa have as much merchandise as Cloud and Aerith have: