Doug Kass to Support Buffett's Berkshire

Doug Kass criticize that the downgrade of Berkshire by Moody's is irony. His reasons are as follows:

As to the effect on Berkshire Hathaway's balance sheet and income statement, it is negligible. Gross debt expenses will only rise slightly -- thanks to the company's still large cash hoard and given the fact that Berkshire is overcapitalized (both absolutely and vis-?vis other insurance companies). Importantly, Berkshire has structured its derivative contracts ingenuously in the fact that it did not have to provide additional collateral when the major world stock market indices dropped precipitously; it simply recorded non-cash charges.

The irony is that the Moody's downgrade has coincided with:
1. a substantial improvement in the value of Berkshire's investment portfolio; and
2. a reversal in some of the losses from Buffett's foray into shorting puts on the major world indices.

As it relates to Berkshire's common shares, I have been conspicuously negative toward the composition of Buffett's investment portfolio and what I described as his "style drift" regarding the foray into derivatives. My concerns peaked regarding the plight of Berkshire Hathaway's shares with a column I wrote as the U.S. stock market was bottoming in early March, "Buy American? I'm Damned!"

So, do you agree with Doug Kass? Considering the economy and the performance of Berkshire, I think Doug Kass' opinion is right.