It is more than that, as the Xoom and just about every Android device on the market, has lag. It has more to do with how it processes and accelerates video than memory.
I've had the HTC Incredible, the Samsung Fascinate,
but currently have the Motorola Droid X
and i have had the iPad tablet,
but currently the XOOM
and,
I've never understood much of what ppl had against Motorola (possibly becuse i started using their android OS phones so late)
The X does not lag,
***the Samsung Fascinate lags bad. (probably because it still doesn't have the 2.2 Froyo update)
I agree that when i received the 2.2 OS update for the X, the phone did get noticeably faster, but it never lagged bad to begin with... i think there must have been a % of users who had extreme circumstances...
HTC seems to always have less to offer, rather than it's smooth scrolling abilities..
my XOOM has absolutely no lag... even though i usually worry about the fact that it does not customarily close apps... they linger in the background... however, it is always operating at SNAP speeds.
I personally would suggest the Bionic,
but would incourage you to wait - as to see where motorola's plans are on the bootloader, etc.
i've yet to have the time to do more than a simple ROOT on my phone; but a friend on mine rooted, and has downloaded ROMS to and other things, once they bootloaders were crack-able... and his phone is amazingly fast...
for me... the X has no lag, the scroll and other things look faulty, mostly do to software... but scrolling is not a big issue for me... yes it looks nicer when scrolling is smooth (iPhone 4 has damn near flawless scrolling), however, i wouldn't settle for a HTC on scrolling alone.
maybe in the past Motorola had bad lag issues, but i see none to complain about, currently.
simply:
IF motorola does not lock, or does not create an overly complicated encryption on their bootloader,
THEN you should get the Bionic, because the better specs, and the custome ROMs (software) that will come out will make it 10x better than the HTC...
you welcome.