The Lions held the Quakes to a 1-1 result at Levi's Stadium after playing almost the entire second half with ten men following Brek Shea's questionable red card on 51 minutes.
Kaka converted from the penalty spot in the 64th minute after Cyle Larin had been brought down in the area by San Jose keeper David Bingham before Chris Wondolowski netted his 100th MLS goal, also from 12 yards, following Darwin Ceren's foul on Jordan Stewart four minutes later.
"Obviously when you played from 52 minutes with 10 men, you can't be greedy," Heath told MLSSoccer.com.
"Obviously going ahead and then giving a penalty four minutes later, you're disappointed. But on the whole, you have to say it was a fair reflection of the game."
Heath added: "The center backs played well, and the full backs gave them good support. The guys in front of them worked ever so hard stopping quality balls coming into the box."
Expansion club Orlando City now sit sixth on the Eastern Conference table with a record of three wins, four draws and five losses in their debut campaign in the USA and Canada's top flight.