Nah, they're not similar at all.
Do QVC and IW presenters mention (repeatedly) the benefits of A versus B? Yes. That's expected.
What QVC does that IW doesn't, is mention everything passively.
QVC: "If you're the kind of person who struggles using a corded vac, then this cordless one could be a better solution. It's available on the first of.2 split pays, so you can get it home and try it out and if it's not for you send it back. I'm joined by our forgettable, vacuous guest, Lady McBland. Lady, would this be a better solution for people who want a vac they can take around the whole house without a cord?" "WHY YES DEBBIE, IT COULD. DYSON HAVE MADE THIS MODEL LIGHTER THAN…"
What IW does that QVC doesn't, is dramatics, theatrics, hysterics, pleas to emotion, doom-mongering, and over-hyping…
IW: "Aren't corded vacs awful? They're so clunky you put your back out lugging them from room to room, you takes ages to recuperate, the husband gets bored and has an affair. Why? And the cord never stretches far enough, they're about 50cm long, and you trip over and damage your leg — Peter's up later with a miraculous and I mean miraculous red light tunnel that can help with broken legs — and the cost of electricity is set to increase substantially in the next few weeks. Why do you put up with it? Because you don't know any better. Well, dear viewer, whose only interest I have at heart. I fought the bosses to bring you a wonderful, and I mean wonderful, 2V 100W cordless vac from the big brand of HUSGFP. It will revolutionise your life. Everyone will be biting my hand off they see the price. You'd expect to pay, what? £500, £600 for a quality cordless vac… Well, get the phone in your hand and get in quick, cos these are gonna fly - and I mean fly - 3..2..1... get in, who's your mama, just £79.99 on the first of 5 flexis. Now over to Alex, our lovely guest, to continue hammering your over the head with mis-facts until you buy one. Alex…" "YES MIKE, I CAN'T BELIEVE THAT PRICE, IT MUST BE AN ERROR…"