Those numbers above are for CO89 IAH-EWR, not EWR-PEK.

Better place to check is www.flightstats.com

For EWR-PEK:
54 flights checked (don't know what time period):
45 ontime (83%)
6 are 16-30 min. late (11%)
3 are 46+ min late (5%)

Maximum late time is 576 minutes. Which I think is on 11/10. [My cousins were flying back from PEK on 11/11, and were delayed for about 9 hours.]

For flights on specific recent days, you may want to check www.flightaware.com