I’m sorry but it’s the same passage, bud. Look at this reference to Sanhedrin.
The Mishnah is written in capitals and the Gemara in normal text.
come-and-hear.com/sanhedrin/sanhedrin_37.html
I will bold the relevant passages:
MISHNAH. HOW WERE THE WITNESSES INSPIRED WITH AWE? WITNESSES IN CAPITAL CHARGES30 WERE BROUGHT IN AND INTIMIDATED [THUS]: PERHAPS WHAT YE SAY IS BASED ONLY ON CONJECTURE,31 OR HEARSAY,32 OR IS EVIDENCE FROM THE MOUTH OF ANOTHER WITNESS,33 OR EVEN FROM THE MOUTH OF A TRUSTWORTHY PERSON:34 PERHAPS YE ARE UNAWARE THAT ULTIMATELY WE SHALL SCRUTINIZE YOUR EVIDENCE BY CROSS EXAMINATION AND INQUIRY? KNOW THEN THAT CAPITAL CASES ARE NOT LIKE MONETARY CASES. IN CIVIL SUITS, ONE CAN MAKE MONETARY RESTITUTION35 AND THEREBY EFFECT HIS ATONEMENT; BUT IN CAPITAL CASES HE IS HELD RESPONSIBLE FOR HIS BLOOD [sc. THE ACCUSED’S] AND THE BLOOD OF HIS [POTENTIAL] DESCENDANTS UNTIL THE END OF TIME,36 FOR THUS WE FIND IN THE CASE OF CAIN, WHO KILLED HIS BROTHER, THAT IT IS WRITTEN: THE BLOODS OF THY BROTHER CRY UNTO ME:37 NOT THE BLOOD OF THY BROTHER, BUT THE BLOODS OF THY BROTHER, IS SAID — i.e., HIS BLOOD AND THE BLOOD OF HIS [POTENTIAL] DESCENDANTS. (ALTERNATIVELY, THE BLOODS OF THY BROTHER, TEACHES THAT HIS BLOOD WAS SPLASHED OVER TREES AND STONES.)38
FOR THIS REASON WAS MAN CREATED ALONE, TO TEACH THEE THAT WHOSOEVER DESTROYS A SINGLE SOUL OF ISRAEL,39 SCRIPTURE IMPUTES [GUILT] TO HIM AS THOUGH HE HAD DESTROYED A COMPLETE WORLD; AND WHOSOEVER PRESERVES A SINGLE SOUL OF ISRAEL, SCRIPTURE ASCRIBES [MERIT] TO HIM AS THOUGH HE HAD PRESERVED A COMPLETE WORLD.40 FURTHERMORE, [HE WAS CREATED ALONE] FOR THE SAKE OF PEACE AMONG MEN, THAT ONE MIGHT NOT SAY TO HIS FELLOW, 'MY FATHER WAS GREATER THAN THINE, AND THAT THE MINIM41 MIGHT NOT SAY, THERE ARE MANY RULING POWERS IN HEAVEN; AGAIN, TO PROCLAIM THE GREATNESS OF THE HOLY ONE, BLESSED BE HE:
FOR IF A MAN STRIKES MANY COINS FROM ONE MOULD, THEY ALL RESEMBLE ONE ANOTHER, BUT THE SUPREME KING OF KINGS,42 THE HOLY ONE, BLESSED BE HE, FASHIONED EVERY MAN IN THE STAMP OP THE FIRST MAN, AND YET NOT ONE OF THEM RESEMBLES HIS FELLOW. THEREFORE EVERY SINGLE PERSON IS OBLIGED TO SAY: THE WORLD WAS CREATED FOR MY SAKE.43
I think it is hard to argue with the evidence from the Sanhedrin itself.