n the Commitment to Share case how does IFRS differ from GAAP in regard to reporting the Value Share Committment contingency resulting from BuyCo's agreement with SellCo to purchase certain assets and liabilities of SellCo in which BuyCo has agreed to transfer an additional 2 million shares of stock to SellCo if the total fair value of the shares held by SellCo (from the purchase transaction) falls below $20 million if BuyCo undergoes an IPO during the period specified? Please explain