Depends on who made the recommendation. If it was from HP or someone that has encountered problems skipping SP2, do it. Otherwise, skipping service packs has never been a problem for us. They are cumulative so SP3 would contain all of the changes made in SP1 and SP2.
Re: SP3 and SP2 from version 8 SP1 (SP2 on multi node)
Okay - thanks! The SP3 release notes say that SP2 did not explode war files properly if you had a cluster or multi-node configuration. For those who may have installed SP2 on a cluster, was there anything special you needed to do besides a standard install?
Seems like that reason alone might justify skipping SP2.