Forum:Plasma attack gaining?

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My friend said that when Destiny Hero - Plasma equips a monster, it gains half the attack of the monster at the time it was equipped, so he took my other friend's Armed Samurai - Ben Kei (which had five equips on him) as an equipped monster and claims it gained 5000 ATK due to all the equip cards it had on him, not 250 ATK. I called BS on this as the Ben Kei didn't have the equips on him anymore, now that he was considered a spell and all the equips were sent to the graveyard, but my friend with Plasma still said that it had 10,000 ATK at the time it was taken, therefore the equip card was considered a 5,000 ATK boost.

He's not right, is he?