I'm not used to this hand format, so i'll post full hand:

PokerStars Hand #162881417869: Hold'em No Limit ($25/$50 USD) - 2016/12/13 11:15:42 ET
Table 'Hakone III' 6-max Seat #1 is the button
Seat 1: LLinusLLove ($5554.54 in chips)
Seat 3: VeGeTTo89 ($5125 in chips)
Seat 4: w00ki3z. ($11697.62 in chips)
Seat 6: OtBRedBaron ($6938.59 in chips)
VeGeTTo89: posts small blind $25
w00ki3z.: posts big blind $50
LLinusLLove: posts the ante $10
VeGeTTo89: posts the ante $10
w00ki3z.: posts the ante $10
OtBRedBaron: posts the ante $10
* HOLE CARDS
OtB_RedBaron: folds
LLinusLLove: raises $100.50 to $150.50
VeGeTTo89: raises $449.50 to $600
w00ki3z.: folds
LLinusLLove: raises $4944.54 to $5544.54 and is all-in
VeGeTTo89: calls $4515 and is all-in
Uncalled bet ($429.54) returned to LLinusLLove
FIRST FLOP [6h 3h 9h]
FIRST TURN [6h 3h 9h] [2c]
FIRST RIVER [6h 3h 9h 2c] [Qd]
SECOND FLOP [2h Qs Ac]
SECOND TURN [2h Qs Ac] [8c]
SECOND RIVER [2h Qs Ac 8c] [5c]
FIRST SHOW DOWN
VeGeTTo89: shows [Jc As] (high card Ace)
LLinusLLove: shows [Td Kd] (high card King)
VeGeTTo89 collected $5159 from pot
SECOND SHOW DOWN
VeGeTTo89: shows [Jc As] (a pair of Aces)
LLinusLLove: shows [Td Kd] (high card Ace)
VeGeTTo89 collected $5159 from pot
SUMMARY *
Total pot $10320 | Rake $2
Hand was run twice
FIRST Board [6h 3h 9h 2c Qd]
SECOND Board [2h Qs Ac 8c 5c]
Seat 1: LLinusLLove (button) showed [Td Kd] and lost with high card King, and lost with high card Ace
Seat 3: VeGeTTo89 (small blind) showed [Jc As] and won ($5159) with high card Ace, and won ($5159) with a pair of Aces
Seat 4: w00ki3z. (big blind) folded before Flop
Seat 6: OtB_RedBaron folded before Flop (didn't bet)

what's the strategy behind 4betting here? Is it just simple math showing this to be +ev vs their range?