How good is Big Brown?

[wac]

As i was watching this race yesertday i just kept thinking that surely this horse is gonna give up the ghost at some point.And he just didn't i know that there are some ?'s about the track but stil its just unreal to me that the horse went 45 for the half and just kept going. Have a lot of you seen that? I know that Bellamy Rd in the wood i guess comes up but something else was pointed out and that was the fact that the horse was weaving back and forth and a lot of the times it seems that people say that they are racing greenly but i have always wondered if it was b/c they are running out of gas. All in all it was an unreal display and i was awestruck for like 30mins afterwards.