lamford, on 2014-December-01, 08:23, said:
It doesn't matter. No matter how good you are (known to partner) and how good partner is, there will always be a range of hands where partner has to decide whether to pass/ invite and another range of hands where partner has to decide whether to invite/ bid game. In some cases it may be 27/28, in others a good 27/28 or a bad 28/29 or a good 28/29. All you know is that opposite you partner has made an (unclear) invite.
It makes no difference either whether playing teams of matchpoints. The fact you stand to gain more by bidding and making game vs a part score is also known to partner and will have affected his judgement. You can't use the argument that bidding game makes it more/less likely to assume partner is strong/ weak for the bidding.