Are Bias Ply IROK's more aggresive than radials??

[wmflyfisher]

I heard that the bias ply design of the irok is a little more aggressive than the radial version. Is that true? Any body got any pics of the two? Or is it all just a bunch of  :bull crap:

[mr4x42u]

the radials are the same as the bias..However all the other swampers do have a different pattern bias v.s radial,,,bias being more aggressive....that is true with the tsl..