What annoys me is that it mentions "exciting pitched battles" and "Game of Thrones" in the same sentence. There was literally one "exciting pitched battle" in the series, at Blackwater. Jaime's early campaigns in the Riverlands, The Whispering Wood, The Camps, The Mill, the siege of Dragonstone, Stannis breaking the Wildling army etc. were all short decisive battles that scattered the remainder or captured the leader of one belligerent army. This is except for the Siege of Dragonstone, which was a needlessly bloody but still small-scale assault on Dragonstone.

Battle of the Ruby Ford(although Tyrion is unconcious for most of it).

That was still pretty small. It involved 1/10th of Robb's army and half of the much larger Lannister army.

While that's true, real medieval armies were much smaller then those in Game of Thrones.

The stark army at the start of The War of The Five Kings numbered 30,000. The Lannister army was even bigger.

An average army from the hundred-year war numbered 10,000. And that war was the largest military conflict in Europe since the Classical era(not counting the crusades because those consisted of multiple armies from multiple countries)

Robb had 20,000 for most of the war, and only started with 12,000 to the Lannister's 30,000. The Lannister's reached 60,000 at one point. The actual War of the Roses, which is the war which heavily inspired aSoIaF, apparently involved 18,000 troops on one side to 36,000 on the other at a point that I was reading about (I'm not sure how many there were throughout the war). Keep in mind that Westeros is far more populous than 15th century England, and the troop numbers don't seem that ridiculous in a world full of dragons and Others. Also, Westeros is a continent of Seven Kingdoms and the Riverlands, so they may as well be multiple countries considering half of them are in open rebellion.

But my point is that the Batlle of the Ruby Ford a classic pitched battle was when compared to to the high middle-ages. Sure it was small for GoT standards but that wasn't your original point.

It wasn't really a pitched battle in the books at all, though. Rose Bolton's troops retreated in good order after successfully distracting Tywin, and massacring 2,000 as it's shown in the show isn't really a "pitched battle" either.