The difference is what they need to live, VS what's ideal for them.
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	2:det	_
2	difference	difference	NOUN	NN	Number=Sing	4	nsubj	4:nsubj	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	4:cop	_
4	what	what	PRON	WP	PronType=Int	0	root	0:root	_
5	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	6	nsubj	6:nsubj	_
6	need	need	VERB	VBP	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	acl:relcl	4:acl:relcl	_
7	to	to	PART	TO	_	8	mark	8:mark	_
8	live	live	VERB	VB	VerbForm=Inf	4	advcl	4:advcl:to	SpaceAfter=No
9	,	,	PUNCT	,	_	11	punct	11:punct	_
10	VS	versus	CCONJ	CC	Abbr=Yes	11	case	11:case	_
11-12	what's	_	_	_	_	_	_	_	_
11	what	what	PRON	WP	PronType=Int	4	obl	4:obl:versus	_
12	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	cop	13:cop	_
13	ideal	ideal	ADJ	JJ	Degree=Pos	11	acl:relcl	11:acl:relcl	_
14	for	for	ADP	IN	_	15	case	15:case	_
15	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	13	obl	13:obl:for	SpaceAfter=No
16	.	.	PUNCT	.	_	4	punct	4:punct	_
