A 32" LCD costing under £1200 or a 43" plasma costing close to £2500 - not exactly going to be a fair comparison is it?
The question then might be "is the Pioneer twice as good as the Panasonic LCD?" and only you can answer that based on your budget, roomsize etc. Certainly DVDs will look better on the Pioneer. I don't think anyone would question that. The 360 is kinder to LCDs, but even then, the 360 on my 42" plasma looks so much better than any demo LCD I've seen in a shop.