Poker is all about reading people who are playing poker. You can try to find another lawyer's tell in the court room, but don't bet on it.
From what I've read and learned from my own lawyer, he who prepares best does the best. The courts, unlike poker, have a judge. In poker the best hand shown wins. In court, the judge wins.
Play poker and enjoy it. I enjoy it, too, but I don't think I'd be ready to bluff my client's freedom, or bet my client's divorce settlement on the fact that opponent tugs on his ear every time he knows the right precendent.