On the New course at Walton Heath, 12 and 13 are both half par holes. 12 is a par 4, 485 yards, downhill, but with a big bunker fronting the green, so you really have to hit two very good shots to get on it. If it's into the wind it's really hard. 13 is a par 5, about 510. They run parallel to each other, so if you play 12 into the wind then 13 is down it and 13 is an easier hole to make 4 on than 12 in those conditions. Goal is to get through those two in 9 shots. Doesn't really matter which way round you do it. If you manage 8 for the two of them then that's great.
I know that in my head when I look at the card, if I see a 470 yard par 4, I'm thinking wow that's gonna be a tough par. If I see a 490 yard par 5, I'm thinking, oo that should be an easy birdie. Doesn't really make sense I know, but that's where I am in my head.