And since you're picking nits, there are no criminal penalties associated with the Presidential Records Act. If you try to make this a Title 18 issue, there's way too much precedent in the opposite direction from what you are asserting.
Again the MAGA's demonstrate an inability or refusal to understand the reality. Here are the criminal charges invoked in the warrant, and presented to the Trump grand jury. All have criminal penalties:
18 U.S.C. §§ 793: Gathering, transmitting or losing defense information, which carries a penalty of up to 10 years in prison.
18 U.S.C. §§ 2071: Concealment, removal, or mutilation generally, which carries a penalty of up to three years in prison and disqualification from holding office.
18 U.S.C. §§ 1519: Destruction, alteration, or falsification of records in Federal investigations and bankruptcy, which carries a penalty of up to 20 years in prison.
The last charge is commonly known as obstruction, and is not in play at all in the Biden case, as he voluntarily disclosed & returned the documents.
Furthermore the first two charges are only in play if the documents were knowingly taken, with intent. There is no evidence of this in the Biden case. Trump signalled his intent when he claimed ownership and sued to get them back, so intent is no longer in question.
The recommendation to charge Trump, or not, will be made by the grand jury. If they recommend, the DoJ will have no choice but to charge him, regardless of the MAGA implosion that will undoubtedly ensue.
The alternative is for justice & the nation to be held hostage by the MAGA's, as the House recently was by the Freedom Caucus. That will not fly with most Americans, they have more integrity & backbone than the current Republican party.
Lastly no grand jury has been convened as of yet for the Biden case. If Biden continues to cooperate fully with the DoJ as overseen by the special counsel Robert Hur, there should be no need for one.