Ghandi had Christ, even if he wasn't a christian and never made the proclamation of faith in Christ.
Ghandi was a pagan. What he possessed was decency and kindness.
Stamping the Christian brand on everything that appeals, is a cunning marketing move but fools no one. The Christ of the bible, is also credited with many threatening and vengeful plans for those that don't obey him.
Ghandi deserves to take the credit for his disposition or attribute it to his own religious faith. Trying to claim all that is good to be of Christ, regardless of who showed those good qualities looks a lot like plagiarism.
Next, the honorable actions of atheists will be stamped with the Christian brand. It is dishonest and does nothing to enhance the battered image of Christianity.