BERLIN (Reuters) -Germany's antitrust head Andreas Mundt on Monday addressed mounting concerns about the deviation in approaches between European regulators and their U.S. peers, saying the divergence is more in terms of rhetoric than substance. Such worries have been amplified in recent months by U.S government and lawmakers' criticism of EU scrutiny of Big Tech and fines levied on U.S. companies for breaching EU rules. Mundt said feedback that he has received from the markets, speeches by antitrust officials and conferences suggested there could be some grandstanding involved.