Looking at spec.org jEnterprise2010 scores:
A T5-2 gets a jEnterprise2010 score of 17k, an X4-2 11k (with half the memory and Oracle Broken Linux 5.9, why not 6.*?).
The sparc has a list price of ~68k USD. Not sure what a two socket Oracle intel box costs; maybe 15k or so?
sparc; 4 usd/score
intel: 1.36 usd/score
Sparc was nice once, but that was ever so long ago..