Chances are that the 2L will require more boost to make the equivilent power, so will have to work harder.  But it's kinda random, as it will depend on what size the turbo is, compressor efficiency, intercooler efficiency, etc: the difference could be really minimal, or it could be turbo-breakingly massive.

From: Hunt M []
Sent: Tuesday, 28 March 2006 5:26 p.m.
To: SCONZ.list Forward
Subject: [sconz] Which flows more

Hey all,
two engines - both making 200rwkw.
both using the exact same turbo, intercooler manifold etc.
Would the turbo have to flow more and work harder to get the 200kw out of the 2 liter or 3?
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