No it doesn't. They're completely different procedures...
YES IT DOES! Let me try to spell this out for you...
On the Unibody MB/MBP the HDD/Battery can be accessed easily under the latch operated cover.
BUT In order to change the RAM you have to remove the bottom case that is screwed in, thus revealing the logic board. What about this is not clear to you?
If this is not good enough, look at the MBA. EXACTLY the same principle as the new 17" MBP. In order to change the RAM/HDD the bottom case must be removed. Does it void the warranty? No!