Another answer is that Edwards certainly knows far more about foreign affairs now than Bush did then.
1	Another	another	DET	DT	_	2	det	2:det	_
2	answer	answer	NOUN	NN	Number=Sing	7	nsubj:outer	7:nsubj:outer	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	7:cop	_
4	that	that	SCONJ	IN	_	7	mark	7:mark	_
5	Edwards	Edwards	PROPN	NNP	Number=Sing	7	nsubj	7:nsubj	_
6	certainly	certainly	ADV	RB	_	7	advmod	7:advmod	_
7	knows	know	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
8	far	far	ADV	RB	Degree=Pos	9	advmod	9:advmod	_
9	more	more	ADJ	JJR	Degree=Cmp	7	obj	7:obj	_
10	about	about	ADP	IN	_	12	case	12:case	_
11	foreign	foreign	ADJ	JJ	Degree=Pos	12	amod	12:amod	_
12	affairs	affair	NOUN	NNS	Number=Plur	9	obl	9:obl:about	_
13	now	now	ADV	RB	_	7	advmod	7:advmod	_
14	than	than	SCONJ	IN	_	16	mark	16:mark	_
15	Bush	Bush	PROPN	NNP	Number=Sing	16	nsubj	16:nsubj	_
16	did	do	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	9	advcl	9:advcl	_
17	then	then	ADV	RB	PronType=Dem	16	advmod	16:advmod	SpaceAfter=No
18	.	.	PUNCT	.	_	7	punct	7:punct	_
