20 inch lg (w2052tq) cheaper than 19 inch lg (w1952tq-tf)

I couldn't believe it when I saw that the 20 inch was 30 dollars cheaper than the 19 inch at a well known canadian retailer. None of the models are advertised as refurb so I assume both are brand new.

Both are 2 ms response time, the 20 inch has a 1680 X 1050 compared to the 1440 X 900 of the 19 inch.

The only difference I saw that that the 19 inch had a normal 3 years warranty, while the 20 inch had a 3 year SWAP (repair exchange) warranty.

Could it be that the 20 inch came from a somewhat faulty batch so the price tag is cheaper but the warranty is also a bit shakier?

Or should I just buy the 20 inch without reservation?