Impossible to tell, because "zaps" are de-coupled from actual sats. I can send you LN sats, without them appearing as "zaps". You can send yourself "zaps", with sats moving from one LN wallet to another (wash-zapping). With your acct (can be detected) or from sockpuppet accounts (cannot be detected). You can send yourself "zaps", with NO sats moving from / to any LN wallet (fake zaps). From your acct, or from sockpuppets. Since "zap amount" is now a vanity metric in many clients, people are incentivized to rig the numbers in their favor. So, it wouldn't surprise me if the real total is lower than both numbers.