Here are the summary of the tests I made between Stockfish 1.5.1 JA and some of the best Blitz engines.

Stockfish 1.5.1 JA            : 300 (+ 89,=122,- 89), 50.0 %

Naum 4                        :  50 (+  6,= 23,- 21), 35.0 %
Shredder 12 UCI               :  50 (+ 13,= 19,- 18), 45.0 %
Rybka 2.3.2a                  :  50 (+ 14,= 22,- 14), 50.0 %
Fritz 11                      :  50 (+ 19,= 17,- 14), 55.0 %
Toga II 1.4.2JD               :  50 (+ 20,= 17,- 13), 57.0 %
HIARCS 12.1 SP                :  50 (+ 17,= 24,-  9), 58.0 %

genarated by ELOstat from Arena 2.0.1

I'll start to test Junior 2010 tonight !

Best regards,
Orlando