It always amazes me to fly with professional pilots who are insecure or nervous about landing on a 6000' long runway or 100' wide runway. Come on guys, if you are nervous about either of those, you need to hone your skills or find a new profession.

If you are appropriately aware of the visual cueing of a "narrower than usual" runway then you can compensate for that mentally.

As stated above, Concord has some threats (i.e. towers, taxiways, parking on the ramp with multiple aircraft, etc). All of which can be mitigated with a solid approach brief and appropriate situational awareness. The worst issue I have had going into Concord was a controller giving a bad visual clearance into pattern traffic.