Goat format ruling
Kaiser Glider

Card effect (current official text)Cannot be destroyed by battle with a monster that has the same ATK. If this card is destroyed and sent to the Graveyard: Target 1 monster on the field; return that target to the hand.
Rulings
- The same ATK as Kaiser Glider means the same as the current ATK, not the original ATK.
- When Kaiser Glider is in Attack Position and battles a monster with the same ATK, only the other monster is destroyed.
- Kaiser Glider's second effect activates when destroyed and sent to the GY from the field, hand, or Deck.
- If Kaiser Glider is equipped to Relinquished or Thousand-Eyes Restrict, and is destroyed and sent to the GY, Kaiser Glider's effect activates. 01/19/04
- Q: If "Kaiser Glider" is in defense mode and attacked by a monster with 2400 ATK, is it destroyed? A: If the ATK is equal to "Kaiser Glider" then "Kaiser Glider" would not be destroyed by the attack.
- Q: Does the effect of "Kaiser Glider" resolve after the effect of "Cyber Jar"? A: Yes. I am assuming that the Kaiser Glider was destroyed by the effect of Cyber Jar in your example.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.