In an interview with CBSSports.com, Jacobs explained why he believes the Jets will always be second fiddle to the defending Super Bowl champs.
"They were in the AFC Championship Game twice in a row, but the year after that the Giants win the Super Bowl," Jacobs told CBSSports.com. "That discredits everything as far as the 'Battle of the City.' They can't ever one-up the Giants -- not in my eyesight, not in anyone else's eyesight. They can never do that. They keep trying, but they're doing it the wrong way.
"Like I said, the Jets have a great football team. They're talented, no question about that, and Shonn [Greene] is a great running back who runs hard. They've got a good team, man, but sometimes ... I just don't know what the problem is. That's why things go the way it does for them."
Jacobs, who won two Super Bowl titles with the Giants in seven seasons before signing with the San Francisco 49ers this offseason, is accustomed to all of the hoopla surrounding the Jets. Now that he's on the West Coast, the running back is still surprised by the constant attention the Jets receive, especially the quarterback situation with Mark Sanchez and Tim Tebow.
"It's a circus, man. But every year it's like that," Jacobs told the website. "Obviously, the Jets have some great players. Bart Scott, [Darrelle] Revis, [Antonio] Cromartie -- they have a good defense, no question about it. But all this stuff surrounding Tebow and Sanchez ... I truly think it's going to be Sanchez. He's going to be the guy. He's got to be the guy. He's the natural quarterback out of the two. That's just my opinion.
"I shouldn't be speaking of their team, but I'm just so tired of reading and hearing everything over there ... and it's mid-August. It's like: Are you kidding me? Camp's not even over."
Jacobs has some recent history with the Jets. After the Giants defeated the Jets 29-14 in December, the running back and Jets coach Rex Ryan exchanged words on the field, with Jacobs calling Ryan "disrespectful."
"I'm glad we came out here and gave it to him," Jacobs told ESPN after the win. "I wish I got a chance to go over there on that sideline. He is disrespectful. I understand why [Kevin] Gilbride and [Ryan's] pop [Buddy Ryan] got into it a long time ago because they all talk too much.
"They got a big-mouthed coach, a big mouth and a big-bellied coach that talks too much and now it's finally time to shut up."
Jacobs later would compliment Ryan as a coach and say he would play for him, a 180 considering his comments from December.
As Jacobs tries to help San Francisco get to the Super Bowl, the Giants will have to slog through a strong NFC East. Philadelphia is a popular pick to win the division, and Jacobs agrees that the Eagles are the team to beat there.
Philadelphia finished tied for second last season, one game behind the Giants. The teams split their 2011 games, with each winning on the road.
"Philadelphia is stacked, and they've got a good quarterback who may be dealing with an (injured) thumb now, but he's working hard," Jacobs told the website. "It's going to be tough to beat the Eagles, but if there's anybody who's going to do it, it's going to be the New York Giants.
"The way they work when it comes down to games ... those divisional games ... coach [Tom Coughlin] knows how to pull it off."
Jacobs, who rushed for 571 yards and seven touchdowns last season, joins a crowded San Francisco backfield. He told CBSSports.com that San Francisco is a great team to be a part of, and he's hoping to show that he's got more left.
He did add, though, that he misses Coughlin.
"[Coughlin] and [Jim Harbaugh] have just different temperaments, just a different way of coaching," Jacobs told the site. "But I miss the old dude. I can tell you that and I definitely mean it. I missed the old dude. But I am extremely happy where I am now."
Matt Ehalt is a regular contributor to ESPNNewYork.com.