Only problem with APC vs tank, tank can turn on a dime. If I see an APC who knows where to aim, I'm going to spin my tank in a circle so your missile wont strike my treads. Or if were close I'm charging straight at you, as was said APC's dont go backwards very fast. Of corse another very good advantage to the APC is map defense. Get 2 or 3 others in it with you and just roam the map making a quick run to any flags that turn gray. Gives you the speed of a jeep and the security of flag capping with a tank (sorta) watching your back. Can make the difference between victory and defeat on a map.
I have used both tanks and APCs, and I doubt an APC would ever win a head on battle of equal skilled drivers with a tank. However using hit and run the APC can do some damage as was pointed out. The problem is a good tank driver wont just stand around while you go in circles, he will be positioning himself to take you down. But in the end, its your teams that really effect how well you do in any armor. If your team is helpless your facing the enemy armor and 10 AT's all with one goal on their mind. If your team is good the infantry will keep the enemy tank busy giving you easy kills. Meh, gotta hate when you start doing good in a tank and 2/3 of the enemy team respawns as anti tank or spec ops just to take you down.
I have used both tanks and APCs, and I doubt an APC would ever win a head on battle of equal skilled drivers with a tank. However using hit and run the APC can do some damage as was pointed out. The problem is a good tank driver wont just stand around while you go in circles, he will be positioning himself to take you down. But in the end, its your teams that really effect how well you do in any armor. If your team is helpless your facing the enemy armor and 10 AT's all with one goal on their mind. If your team is good the infantry will keep the enemy tank busy giving you easy kills. Meh, gotta hate when you start doing good in a tank and 2/3 of the enemy team respawns as anti tank or spec ops just to take you down.