This statement is a farce. They claim the story is factually incorrect, but provide no corrections. They point out the NYT does the same thing, but that does not contradict anything in the NYT article, and has no bearing on what they did. Finally, they yell "debate me!" but rather than proposing a debate on the facts in dispute, instead want to debate federal tax policy which neither controls.
There were two claims in the NY Times story:
1) FedEx paid $0 in tax
2) FedEx "has not made good on its promised investment surge"
In response, FedEx wrote in their statement:
1) our billions of dollars of tax payments whereby they dispute paying $0 in taxes
2) $6 billion of capital that FedEx invested in the U.S. economy
This directly contradicts what the NY Times wrote. And then they further point that the NY Times is actually guilty of what the NY Times is accusing FedEx of. How is their statement a farce?
Further, the problem is that the tax code, especially for corporations, is so complex that anyone's tax payments can be spun any way you want them.
For example, I contributed the maximum allowed to my employer's 401k this year. Someone could spin a news story saying, "300bps is avoiding taxes!" because I legally did not pay tax on $19,000 of income I otherwise would've had to.
I don't know the particulars of FedEx's tax situation and honestly it would probably take me days of studying it before I could scratch the surface of understanding it. If FedEx did something illegal, there is a nice tax bounty the NY Times could get for reporting them - https://www.irs.gov/compliance/whistleblower-informant-award
The NY Times is obviously not aware of anything FedEx did that is illegal so instead they put out a piece accusing them of paying $0 tax and not investing enough.