Yes this could be a big deal, someday, if the finding holds up for other mammals (a big one), if it works for different kinds of transplants, if it's repeatable, if there are no other major consequences, if human trials are successful, if if if.
Failure to include the "if"s is misleading at best and irresponsible at worst, for giving possibly false hope to those dealing with transplant rejection.
The Mac has a 2.66 Ghz processor vs. 2.4 for the Dell. On the Dell site this costs another $375 to upgrade.
The Mac has 1066Mhz RAM vs. 677Mhz for the Dell. At 4GB this upgrade can be costly.
The Mac has and the Dell doesn't have:
- 3 USB 2.0 ports
- Optical audio
- Firewire 800
- Gigabit Ethernet
The Dell's wireless is a 802.11g card (so the antenna hangs out and uses up the card slot). The Mac's is 802.11n and is integrated leaving a free card slot.
Oh, and Dell sells this computer for $1900, not $1600.
The specs look close superficially, but dig down and the machines aren't even close in terms of features and performance.