The phrase "a sufficient replacement for" is correct and usable in written English.
It can be used when discussing whether one thing can adequately serve the purpose of another.
Example: "While the new software is not perfect, it is a sufficient replacement for the outdated system we were using."
Alternatives: "an adequate substitute for" or "a viable alternative to".
Big banks have begun to embrace the retail bank customer again, attracted by the stability of that business, and the realization that automated teller machines and online banking are not a sufficient replacement for face-to-face communication.
A study has found that older people need to see their relatives three times a week to prevent them from becoming depressed, and that speaking on the phone or via email is not a sufficient replacement for face-to-face contact when it comes to staving off mental health problems.
I remain skeptical as ever that convertibles will serve as a sufficient replacement for both laptop and tablet.
However, to use such tools as a sufficient replacement to current bioinformatics pipelines, we need more accessible and comprehensive APIs for processing genomic data.
It was the moderator, Kurt Andersen — not a panelist, Ken Auletta — who expressed disappointment that "by now, 15, 20 years into the Web," there are fewer "indigenous news entities online" than he had anticipated, saying that the "commentary and aggregation" supplied by so many Web sites is not sufficient replacement for journalistic reportage.
Mr. Andersen expressed disappointment that "by now, 15, 20 years into the Web," there are fewer "indigenous news entities online" than he had anticipated, saying that the "commentary and aggregation" supplied by so many Web sites is not sufficient replacement for journalistic reportage.
Ultimately, the voluntary system of recruitment proved unable to sustain the force structure of the AIF, failing to provide sufficient replacements for the heavy casualties it sustained and requiring a number of units to be disbanded towards the end of the war.
On paper, at least, Todd Zeile and Derek Bell are not sufficient replacements for John Olerud and Roger Cedeno.
The number of people likely to be displaced has doubled to more than 60,000, and sufficient replacement land for them does not exist.
