Its really obvious. If he sucks up Zanji, he gets 1800, Zanji's original attack. If he sucks up Grandmaster, he gets 2100, Grandmaster's original attack. 2 things: 1. The monster is now under the opponent's control, meaning any beneficial thing from Solidarity is worthless. 2. Relinquished, very obviously, doesnt get any bonus from Solidary because it is 1. player b's monster and 2. not a warrior. Because Grandmaster/Zanji are treated as equip cards, not monsters anymore, they do not get any bonuses at all.