Why Do All Delegate Counters Suck?

Dear Interweb,

Who do all the delegate counters suck?

I have found four different counters with four different answers. Some ignore superdelegates, which is dumb, since their votes will matter this year. But the pledged counts are wrong! God!

As I write this at 3:31am PST, we these are the counts

MSNBC:

Pledged Supers Total
Obama 943 0 943
Clinton 895 0 895
Edwards 26 0 26
All others with 0

Wikipedia:

Pledged Supers Total
Obama 997 127 1124
Clinton 920 224 1144
Edwards 26 0 26
All others with 0

CNN:

Pledged Supers Total
Obama 986 135 1121
Clinton 924 224 1148
Edwards 26 0 26
All others with 0

ABC:

Pledged Supers Total
Obama 1110
Clinton 1127
Edwards 40
Biden 3
Dodd 4
Richardson 5
All others with 0

DemConWatch:

Pledged Supers Total
Obama 937 127 1064
Clinton 884 224 1108
Edwards 12 0 12
Unknown-IA 14 0 0
All others with 0

Now DemConWatch also gives counts that include Michigan and Florida, just in case Clintonistas pull off their coup, which I like. But who knows what’s up with the the “Unknown Iowan Delgates”, that everyone else says are Edwards’s.

CBS:

Pledged Supers Total
Obama 952 156 1108
Clinton 893 243 1136
Edwards 26 0 26
Uncommitted 1 66 67
All others with 0

AP:

Pledged Supers Total
Obama 997 137 1134
Clinton 920 211 1131
Edwards 26 0 26
All others with 0

Does this mean that we’re going to need some sort of metacounter that averages all the predictions?

Why is this so hard?