Who bets on 1.2 odds? No value what so ever!
Personally I do think that joca is a great tipster and 1.2 odds is consider to be a safe bet. I supposed you are big bettor than the 1.2 odds actually will give you big return still if the bet is a win bet. If you are not satisfied with the odds you can always parlay two safe bet to guarantee a maximum return for your bet
Of course it matters.
You need to look at it using math.
If you lose a 1.2x1BTC bet(which you will eventually)
To go even you need to bet like this: 1.2x1 = 1.2BTC, 1.2BTCx1.2= 1.44, 1.44BTCx1.2=1.72BTC, 1.72BTCx1.2=2BTC
Total: 1+1.2+1.44+1.72 = 5.36BTC.
This means, if you lose a bet on Jocas tips, you need to bet a total of 5.36BTC to go even from your one lose streak, we are not even considering the possibility to lose once you have lost once.
Betting is all about value, if you have no value, then there is no point in betting. Bookies feed themselves on people betting 1.2 odds.