Well, only the low end stuff is rebranded. This is the same though for Agilent or even smaller companies as Gossen Metrawatt. All the entry level stuff is just rebranded China gear.
Honestly I never used a signal generator by LeCroy, but the scopes I saw and used were of either excellent or at least very decent quality. We have quiet a few Lecroy scopes at work which must be from the late 80s and they still work flawlessly (apart from the disk drives that usually died after all that time). This is also true for the old HP gear, but lots of the Agilent scopes which are only like 10 years old are partly unusable due to broken rotary encoders. Not that I wanted to use them anyway.
So regarding scopes, my impression is quite the opposite of yours. It seems to me that Agilent only sells scopes based on their passed (HP) glory, but feature-wise, they just can't compete with LeCroy in the higher end (10k€ and above) stuff.