A +2 spiked chain is 8325 gold out of the characters 13000.
A 6th level fighter has 3 feats normally along with 4 bonus feats. Out of those at least 6 are going towards this particular problem. Exotic weapon proficiency, power attack, cleave, great cleave, weapon focus, and weapon specialization.
An 18 in strength takes 16 point buy points and the standard assumption would be either 25 or 28, leaving little room for other important statistics.
The character is also in full plate which means little movement and is a fighter which means little skill choice.
Killing melee mooks looks to basically be all this character is good at. If that goes away I would expect the player to get frustrated and bored quickly.
If the characters statistics are too high then it could give them more power than the game assumes for their level. Only spending 50% or less of the gear value for the level on a single item helps with over specializing as well.