On the first hand, it also matters if you play MP or IMP. With IMP scoring I would easily bid 4 hearts as east and easily accept the invitation as west. A game contract vulnerable is worth 620 points, three hearts is worth 140 (170 with one overtrick), and a penalty costs 100. So if you make it one time out of three you will get 620 - 100 - 100 = 420 when bidding 4 hearts but only 170+140+140=350 when bidding 3 hearts. With match point scoring it's not so.
Superb lesson thank you
On the first hand, it also matters if you play MP or IMP. With IMP scoring I would easily bid 4 hearts as east and easily accept the invitation as west. A game contract vulnerable is worth 620 points, three hearts is worth 140 (170 with one overtrick), and a penalty costs 100. So if you make it one time out of three you will get 620 - 100 - 100 = 420 when bidding 4 hearts but only 170+140+140=350 when bidding 3 hearts.
With match point scoring it's not so.