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The AEDC bottleneck is a fair point to raise, but GE's Phase 1 testing at their facility and AEDC wrapped up nearly a year of tests in November of last year, P&W's Phase 1 testing had only started in October of last year. GE now says they've completed Phase 2, but we haven't heard when Pratt's Phase 1 will end yet. This is not to say P&W is struggling or in a bad place with their design, I'm not saying its a dealbreaker. If you wish, you may dismiss the current state of the two companies' test programs entirely and my point still stands: GE seems more confident in their AETP and is making a good case for it, Pratt seems to favor their EEP.