I 100% think it does but not as such with slots...
small bets with slots = quite a few small wins and an occasional but rare big win
big bets with slows = usually very few small wins and even less big wins but when it does pay a big win its massive
(more often than not)
blackjack on the other hand is 100% about bet size. At many casinos iv played at I could be betting £1 and £2 a hand and get many excellent hands in a row... but then I higher the bet to £4+ and every single hand is 15's a 16's compared to dealers 20,21 or blackjack
I think once I proved a theory that the result in blackjack is determined before you hit the deal button.
Once I played at this site (its not rogue its accredited casino). It was a while back so I cant remember the exact scenario but it was something like dealer showed a 7... I had to 10's... so I split...
hand 1 was 17.. I stood, hand 2 was 16... Again I stood..... dealers cards unfolded... he had a 9 so that was 16 and obviously hit and got a 4 sp had 20 and I lost...
now that hand stuttered or bugged or something and it refreshed the state back to where I split the cards, Again I stood on 17... where I had 16 I knew the dealer had hit previously and had a 4... so I hit thinking id get that 4... but i got a 10 and bust... dealer than had 18 lol
This showed me that blackjack result is fixed as soon as you hit deal and no matter what you do its already set the maximum you can win on that hand and the cards that are to be dealt...
It makes me wonder as well if say you bet £5 and get 11, if the maximum it set to pay you for that had is £10 you can double and of course get nothing... or if you normally hit you could well have 21.
Certainly slots are a lot wider ranged than online card games